2311085 has 12 divisors (see below), whose sum is σ = 3226428. Its totient is φ = 1584576.

The previous prime is 2311079. The next prime is 2311117. The reversal of 2311085 is 5801132.

2311085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 1087849 = 1106^2 + 1043^2 .

It is not a de Polignac number, because 2311085 - 2⁶ = 2311021 is a prime.

It is a super-2 number, since 2×2311085² = 10682227754450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4472 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (268869).

2^2311085 is an apocalyptic number.

It is an amenable number.

2311085 is a deficient number, since it is larger than the sum of its proper divisors (915343).

2311085 is an equidigital number, since it uses as much as digits as its factorization.

2311085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452 (or 9445 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2311085 is about 1520.2253122482. The cubic root of 2311085 is about 132.2123342599.

It can be divided in two parts, 2 and 311085, that multiplied together give a triangular number (622170 = T₁₁₁₅).

The spelling of 2311085 in words is "two million, three hundred eleven thousand, eighty-five".